Unidirectionally valved drip chamber, inlet port assembly useful

Details Unidirectionally valved drip chamber, inlet port assembly useful Unidirectionally valved drip chamber, inlet port assembly useful

1977-08-23

1979-06-19

Pellegrino, Stephen C.

Surgery

Respiratory method or device

Ozone or ion generation

128275, A61J 100, A61F 544

Patent

active

041583620

ABSTRACT:
A unidirectionally valved drip chamber, inlet port assembly useful for liquid collection containers, e.g., urinary collection bags, or other containers requiring antireflux protection is disclosed. The assembly comprises a flexible, hollow, substantially frusto-conical unidirectional valve fixedly mounted between the inlet and outlet of the assembly. The valve has a closed top and open bottom and is normally closed against a complementary substantially frusto-conical valve seat. The conical wall of the valve flexes away from the valve seat to allow liquid to flow from the inlet to the outlet. Liquid flowing from the outlet towards the inlet forces the valve more firmly against the valve seat so that the valve remains closed to such reverse or reflux flow.

REFERENCES:
patent: 274308 (1883-03-01), George
patent: 3227173 (1966-01-01), Bernstein
patent: 3626978 (1971-12-01), Hoekstra
patent: 3682817 (1972-08-01), Marx
patent: 3901235 (1975-08-01), Patel et al.

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